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annotate core/src/luan/modules/Time.luan @ 615:abc3198c86dd

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fix tail recursion bug; add Hosting.exists();
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 17 Dec 2015 01:53:48 -0700
parents b4f3dbe1c6e3
children ca169567ce07
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1 -- incomplete, will add as needed
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2
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3 java()
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4 local Luan = require "luan:Luan"
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5 local error = Luan.error
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6 local ipairs = Luan.ipairs or error()
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7 local Table = require "luan:Table"
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8 local System = require "java:java.lang.System"
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9 local Calendar = require "java:java.util.Calendar"
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10 local Date = require "java:java.util.Date"
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11 local TimeZone = require "java:java.util.TimeZone"
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12 local SimpleDateFormat = require "java:java.text.SimpleDateFormat"
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14 local M = {}
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16 function M.now()
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17 return System.currentTimeMillis()
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18 end
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20 -- add more as needed
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21 local fields = {
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22 year = Calendar.YEAR;
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23 month = Calendar.MONTH;
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24 day_of_month = Calendar.DAY_OF_MONTH;
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25 }
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27 function M.get( time, ... )
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28 local cal = Calendar.getInstance()
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29 cal.setTimeInMillis(time)
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30 local rtn = {}
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31 for i, v in ipairs{...} do
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32 local fld = fields[v.lower()]
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33 fld or error("invalid field: "+v)
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34 local n = cal.get(fld)
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35 if fld == "month" then
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36 n = n + 1
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37 end
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38 rtn[i] = n
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39 end
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40 return Table.unpack(rtn)
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41 end
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43 function M.format(time,pattern)
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44 pattern = pattern or "yyyy-MM-dd HH:mm:ss"
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45 return SimpleDateFormat.new(pattern).format(Date.new(time))
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46 end
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47
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48 function M.on( year, month, day, hour, minute, second, millis )
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49 month = month - 1
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50 local cal = Calendar.getInstance()
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51 cal.setLenient(false)
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52 cal.set( year, month, day, hour or 0, minute or 0, second or 0 )
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53 cal.set( Calendar.MILLISECOND, millis or 0 )
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54 return cal.getTimeInMillis()
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55 end
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56
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57 function M.period( days, hours, minutes, seconds, millis )
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58 local cal = Calendar.getInstance()
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59 cal.setTimeZone(TimeZone.getTimeZone("GMT"))
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60 days = days + 1
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61 cal.set( 1970, 0, days, hours or 0, minutes or 0, seconds or 0 )
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62 cal.set( Calendar.MILLISECOND, millis or 0 )
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63 return cal.getTimeInMillis()
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64 end
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66 function M.parse( pattern, source )
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67 return SimpleDateFormat.new(pattern).parse(source).getTime()
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68 end
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70 return M